seems this is experience use social media for bitcoin, it's great and I like, but I have not yet experience, because I still newbie, haha LOL 
Since everybody is connected with the internet all the time promoting bitcoin through social media can go a very long way. Recently I saw on facebook that they have some clips about bitcoin, and there are a lot of possitve comments, I hope they will post more about bitcoin.
Social media can be good or bad for promoting bitcoin because some people only promotes their scam to lure people that wants easy money and this is the bad side. Now, some people are promoting bitcoin and it's benefits if we use it. I see a lot of bitcoin related pages that get many likes especially in facebook. There are a lot of facebook users and sharing a video or just a post related to bitcoin will get engagement even if you are a crypto or non crypto users. I think social media is a good help for bitcoin to reach a wider audience or to get many users to involve.
Bitcoin also has dead spots, when used by scammers for fraudulent schemes such as hyip, MLM
That is a negative point, but not so hard to avoid scammers like that at Social Medias. It's not everyone on Social Medias that you should trust, especially Facebook that is full of scammers of all kinds. They fake everything: Videos, images, Blockchain account's info, informations about their personal life, etc. Some years ago it was much worse, now people are more aware about the risks. Try to build a trust network on Social Media, don't fool people and they will trust you back.